The University of Texas at AustinHines H. Baker and Thelma Kelley Baker Chair in Law and Professor of Philosophy, 2006-2008Joseph D. Jamail Centennial Chair in Law and Professor of Philosophy, 2002-2006Charles I. Francis Professor in Law and Professor of Philosophy, 2000-2002Joe A. Worsham Centennial Professor in Law and Professor of Philosophy, 1997-2000Assistant Professor of Law and Philosophy, 1995-1997

Yale UniversityVisiting Professor of Law, 1998-1999

University of California-San DiegoVisiting Assistant Professor of Philosophy, spring 1995